Bennett County, SD Shrink-Swell Risk

Shrink-swell potential in Bennett County, SD

Low

Soil across 68.8% of Bennett County, SD comes back "Low" in USDA's shrink-swell data, averaging 1.96% linear extensibility. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Bennett County, SD - never a reading for one specific parcel. A site-specific soil report, usually $1,000-$5,000, is what an engineer would actually pull before designing a foundation on a lot in Bennett County.

Bennett County: the real numbers

Bennett County's soil reading points toward standard foundation practice as the likely outcome, not the exception. A geotechnical report runs $1,000-$5,000, typically around $2,700. Foundation repair, if a specific lot turns out to differ from the county average, runs $5,000-$15,000.

Bennett County's rank among South Dakota counties

Among the 3,085 rated counties on this site, Bennett County, SD ranks 2,022 most-constrained nationally, and 66 of 66 within South Dakota. The county spans 1,185 square miles, home to 3,289 people.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Childress County, TX and Thomas County, NE are worth a look for comparison.

How this reading is built, and its real limits · Moisture management: the cheap fix that works on any soil

Elsewhere in South Dakota

Every county in South Dakota is on this site, including Lawrence County, SD and Buffalo County, SD. The full underlying dataset is downloadable directly, one row per county.